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The article you requested is

Efficacy of the Novel Antidepressant Agomelatine on the Circadian Rest-Activity Cycle and Depressive and Anxiety Symptoms in Patients With Major Depressive Disorder: A Randomized, Double-Blind Comparison With Sertraline

J Clin Psychiatry 2010;71(2):109-120
10.4088/JCP.09m05347blu
Copyright 2010 Physicians Postgraduate Press, Inc.

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Objective: This study evaluates the efficacy of agomelatine, the first antidepressant to be an agonist at MT1/MT2 receptors and an antagonist at 5-HT2C receptors, versus sertraline with regard to the amplitude of the circadian rest-activity cycle and depressive and anxiety symptoms in patients with major depressive disorder (MDD).

Method: Outpatients with DSM-IV-TR–defined MDD received either agomelatine 25 to 50 mg (n=154) or sertraline 50 to 100 mg (n=159) during a 6-week, randomized, double-blind treatment period. The study was conducted from 2005 to 2006. The main outcome measure was the relative amplitude of the individual rest-activity cycles, expressed as change from baseline to week 6 and collected from continuous records using wrist actigraphy and sleep logs. Secondary outcome measures were sleep efficiency and sleep latency, both derived from actigraphy, and efficacy on depression symptoms (17-Item Hamilton Depression Rating Scale total score and Clinical Global Impressions scale scores) and anxiety symptoms (Hamilton Anxiety Rating Scale total score and subscores).

Results: A significant difference in favor of agomelatine compared to sertraline on the relative amplitude of the circadian rest-activity cycle was observed at the end of the first week (P=.01). In parallel, a significant improvement of sleep latency (P<.001) and sleep efficiency (P<.001) from week 1 to week 6 was observed with agomelatine as compared to sertraline. Over the 6-week treatment period, depressive symptoms improved significantly more with agomelatine than with sertraline (P<.05), as did anxiety symptoms (P<.05).

Conclusions: The favorable effect of agomelatine on the relative amplitude of the circadian rest-activity/sleep-wake cycle in depressed patients at week 1 reflects early improvement in sleep and daytime functioning. Higher efficacy results were observed with agomelatine as compared to sertraline on both depressive and anxiety symptoms over the 6-week treatment period, together with a good tolerability profile. These findings indicate that agomelatine offers promising benefits for MDD patients.

Trial Registration: www.isrctn.org: ISRCTN49376288